Hi,

I have been using your proxysocket class for .NET and find it extremely useful!

I was wondering how difficult it would be to add auto-detection functionality to detect the SOCKS version and what would be involved

I would greatly appreciate any input, as I am not too familiar with the SOCKS protocol and I cant find anything about this topic online.

Thanks!

Jason

It would not be difficult. The first byte that a client sends to the server is the version number. So if the first byte the server receives is a 4, it know that the client is using SOCKS4. Likewise, if the first byte is a 5, the client is using SOCKS5.

You can find more information about SOCKS at this address: http://www.socks.nec.com/

I just noticed you were talking about the ProxySocket class in particular. Note that the ProxySocket only implements the client side SOCKS protocol [whereas our Proxy server implements the server side protocol].

It is impossible for SOCKS clients to know beforehand which protocols the server supports. You'll have to ask the end user to decide whether to use SOCKS4 or 5. Alternatively, you can try to connect with version 4 and is the server disconnects you try with version 5.